Aorta MSCTA image optimum contrast agent dosage test method

Abstract

The invention relates to an aorta MSCTA image optimum contrast agent dosage test method comprising the following specific steps: 1, searching suspected aorta pathology cases for aorta MSCTA inspection, dividing the cases into different groups according to contrast agent dosages, wherein the used contrast agent is iopamidol; 2, using multilayer spiral CT for scanning; 3, sending CT original data to a work station, reconstructing images, and measuring ascending aorta, T7 and L2 level descending aorta, and aorta bifurcated CT value; 4, evaluating blood vessel reinforcement level and main branch blood vessel display sharpness; 5, comparing differences of different dosage groups, and finding the best scheme with less contrast agent dosage and without affecting image quality. The advantages are that the test method can select the best scheme to reduce contrast agent dosage, thus reducing contrast agent nephrosis incidence rate, reducing patient economy burden, and reducing unnecessary medical resource waste.

Description

technical field [0001] The invention relates to the field of aortic MSCTA image research, in particular to a method for testing the optimal amount of contrast agent for aortic MSCTA images. Background technique [0002] With the change of people's living and eating habits, the incidence of aortic disease shows a significant upward trend. At present, the methods used as auxiliary diagnosis of aortic lesions mainly include echocardiography, multi-slice CTangiography (MSCTA), magnetic resonance angiography (MRA) and digital subtraction angiography (DSA). [0003] The advantage of echocardiography is that it is not interfered by lung tissue and obesity, and can clearly display the fine lesions in the aortic wall and the blood flow in the cavity. However, when examining the descending aorta, it often does not go through the suprasternal fossa and supraclavicular fossa exploration, which can easily lead to false negative results. [0004] MRA has high sensitivity and specificity...

AI Technical Summary

Problems solved by technology

[0005] For a long time, DSA angiography has been called the "gold standard" for the diagnosis of aortic lesions, but its disadvantage is that the display rate of false lumen and intimal slices is not as good as that of CT, especially when thrombosis in the false lumen, retrograde vascular Imaging will be limited

[0007] Of course, multi-slice spiral CT aortic imaging, like other enhanced CT scans, requires contrast agent injection, and the amount of contrast agent can affect the quality of MSCTA images

However, contrast agents are harmful to the human body, so how to take into account the relationship between contrast dose and image quality has become one of the research hotspots of non-invasive cardiovascular imaging at home and abroad.

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